k6 Interview Questions
K6 is an open-source performance testing tool that is widely used for testing the scalability and performance of web applications.
Ensure you have a solid understanding of what K6 is, its purpose, and how it is used in performance testing.
Be prepared to discuss your hands-on experience with K6. Talk about specific projects or scenarios where you have used K6 to conduct performance testing.
Here are some common K6 interview questions:
1. What is K6?
2. How does K6 differ from other load testing tools?
3. Explain the scripting language used in K6.
4. What are scenarios in K6?
5. Explain the difference between a constant load and a ramp-up load scenario.
6. How do you set up environment variables in K6?
7. Explain the concept of checks in K6.
8. What is the purpose of the — vus and — duration options in K6?
9. How can you run a K6 test in distributed mode?
10. What is the role of the setup() and teardown() functions in K6 scripts?
11. How do you parameterize data in K6 scripts for dynamic testing?
12. Explain the purpose of the — summary-trend-stats option in K6.
13. How can you simulate user think time in K6?
14. How do you handle authentication in K6 scripts for protected APIs?
15. Explain how thresholds work in K6 and why they are important.
16. Can you integrate K6 with Continuous Integration (CI) tools? If yes, how?
17. How can you handle dynamic parameters in your requests, such as tokens that expire during a test in K6?
18. What is the role of the K6 Cloud service, and how does it differ from running tests locally?
19. How can you simulate realistic user behavior in K6 scripts?
20. Explain the concept of tags in K6 and how they can be useful.
21. How do you handle file uploads in K6 scripts?
22. How can you analyze and interpret K6 test results, especially when dealing with a large number of virtual users?
23. Explain how you can handle WebSocket communication in K6 scripts.
24. How can you simulate gradual user ramp-down in K6, mimicking a scenario where users gradually leave the system?
25. How can you simulate different geographic locations in K6 tests?
26. How does K6 handle iterations and VUs in scenarios, and what is the significance of the iteration planning phase?
27. Explain how to use the K6 Docker image for running tests in a containerized environment.
28. How can you parameterize test data in K6 for different test scenarios?
29. How can you analyze and visualize K6 test results using Grafana dashboards?
30. How can you use the K6 JavaScript API to dynamically control the test execution flow?
31. How can you simulate a spike in user load during a specific period in a K6 test?
32. How do you handle and report errors in K6 scripts, and what information is available for error analysis?
33. Explain how to handle dynamic URLs and parameters in K6 scripts.
34. How can you use environment variables in K6 scripts, and why are they useful?
35. How do you use the K6 REST API to trigger test runs programmatically?
36. How can you customize the output format of K6 results for better integration with external tools or systems?
37. How can you use custom tags in K6 to organize and filter results in the output?
38. How can you implement test retries in K6 for handling intermittent failures?
39. How can you use the K6 Docker image to execute tests in a continuous integration (CI) environment?
40. How do you use the K6 REST API to retrieve results and metrics after a test run?
✨You can read the answers to these questions in below link:👇
🌠Best Of Luck For Your Interview! 💼
